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Protein is a macronutrient in every cell in your body that’s vital for your health. If you’re an athlete, gym-goer, or just want to shed a few pounds, protein can also help build and retain muscle. Consuming one of the best whey protein powders is an effective and inexpensive way to add more of the macronutrients to your diet. 

Our top pick is the Naked Whey Protein; this protein powder is made from just a single ingredient, whey protein, and has no additives or extras. For a customizable option, we recommend Gainful; Gainful lets you personalize what’s in the protein powder based on your fitness level, diet habits, and personal preference. 

Below are eight of the best whey protein powders, all tested and researched based on a variety of users, diets, and dietary restrictions. We’ve also included answers to a few FAQs, tips on the best places to purchase protein, and insight into how we test supplements, at the end of this guide. 

Top picks for the best whey protein powder

Best overall: Naked Whey Protein – See on Amazon

Best for mixing: Cellucor Whey Protein Isolate – See on Cellucor

Best sugar-free: Optimum Nutrition Platinum Hydrowhey – See on Amazon

Best customized: Gainful Custom Protein Powder – See on Gainful

Best GNC: GNC AMP Wheybolic – See on GNC

Best-tasting: Optimum Nutrition Gold Standard 100% Whey – See on Amazon

Best fat-free: Myprotein Impact Whey Isolate Protein – See on Myprotein

Best lactose-free: Dymatize ISO 100 Whey Protein Powder – See on Amazon